From 9to5Toys.com:
Amazon is throwing in a free $10 gift card with the purchase of a Google Chromecast HDMI Streaming Media Player for $29.99 Prime shipped. This combo carries a street value of $45 since the Chromecast usually sells for $35 by itself. Assuming you use the credit, today’s deal nets you the best HDMI streaming player for an effective price of just $20. Prime members (free trial) receive free 2-day shipping, while all other buyers will need to spend $35 or more to lock-in free standard shipping. To qualify for this deal you’ll need to add the Chromecast and $10 gift card to your cart via this promo page.

Chromecast streams Netflix, YouTube, HBO Go, Hulu Plus and tons of other apps to your TV over Wi-Fi using your iOS/Android device or laptop. Get even more value out of your Chromecast by taking advantage of special offers like a free Google Play movie rental. It’s rated 4.1 out of 5 stars from 35,264 Amazon reviewers.